Improvement in car-trucks



y iti Which- UNI'rEDS'rArEs PATENT 'OEEIcE ""EEUBEN winsLow, on LooxHAVEN, PENNSYLVANIA, AssreNoE 'ro HIM.

SELF `ANDEEUBEN wINsLow PETEIKAN, 0E sAME PLAGE.

l WIM PRovEM ENT IN `CAR-TRUCKS.

i l Specification forming part of Letters Patent No. 115,261, datedMay23,1871.

" .To all whom 'it may concern:

`Be it knownthat I, REUBEN WrNsLoW, of

State` of Pennsylvania,` have invented a new f and Improved Railroad-GarRunning-Gear; i andI do hereby declare the following to be a full,clear, and exact description of the same,

referencebeing.had` to the accompanying drawing,inaking a part of thisspecification,

Figure l is a side elevation of a truck. Fig.

i 2 is an end view; Fig. 3, a partial top view.

Fig. 4 is aside view `of oneof the axle-boxes A', the suspending-bandsb, and the sustaining-bar c. the line B C, Fig. l, and Fig. 6, ahorizontal section in the line E F, Fig. l.

This invention has for its object to adapt the journal-bearings of theaxles of a car-truck to oscillateor have a fore-and-aft motion, for

l the twofold purpose of practically increasing the diameterlof theouter' wheels when passing around a curve, and also enabling thelocomotive to moreeasily overcome the inertia of acar or train of carsat starting, or when the speed is increased during the `movement of thesame.

` To this end I; provide journal-boxes or blocks, connected -with thelower part of the pedestals of a truck by means of straps or Thejournals of the axles of these wheels enter boxes A. The boxes A areprovided with side anges, a, which enter correspond ing grooves n, madein the inner sides of `the f. pedestals 1whichin`close said boxes on thei top and at each side.

Elliptical bands b inclose the boxes A inside of the pedestals d. Boththe pedestalsfcl and the boxes A rest on short bars e, which are placed011 theA long barsic' e', `extending from one axle to the otherat eachside of the truck, and forming, in conjunction with braces g,supportingframes.

`Through these `bands b pass bars c-i. e., between the bands and bars ee-and thus i form the sole means of" supporting the weight Fig. 5 is alongitudinal section inof the car. This, however, leaves the boxes A'free to vibrate fore and aft within the pedestals d independently ofeach other.

When a car provided with running-gear of the above-describedconstruction passes from the tangent ot'` a curve upon the curve itself,the anges of the outer wheels naturally seek the outer rails, and theilanges of the inner wheels are consequently drawn correspondin gly awayfrom the inner rails, as in ordinary trucks; but the axles beingsuspended in independently adjustable bearing-blocks, they assume aposition approximating parallelism with different radiuses of thecircle, ,and the outer wheels may thus approach closer to the outer railof the curve than they could otherwise do. Thus the diameter of theouter wheels is practically increased, and that ofthe innercorrespondingly diminished. It therefore results that the binding andexcessive friction ordinarily attending the passage of cars around acurve are obviated or reduced to a minimum in. my invention.

While the axles of the same truck may not always be perfectly parallelto different radiy uses of a curve, they will, as before stated,-

tend to approximate them. In this they are aided by the flanges of theoutervwheels crowding againstthe outer rail of the track, so that thetendency is to throw the inner wheel some` what backward.

It is also evident that when a train composed of a locomotive and one ormore cars provided with my improved running-gear is started, the inertiaof the cars will lirst be overcome independently of the axles andwheels, and the slight momentum thus acquired be transmitted to them.4This advantage is one ot' the minor results of my invention, butpractically of considerable value in the wear and teanof rollingstock lHaving thus described my invention, what l claim as new, and desire tosecure by lietters Patent, is

A car-axle having the car or truck frame suspendedupon it in such amanner as to enable the axle-boxes to lvibrate fore and aft,substantially as specified.

EEUBEN wINsLow.

